Preparation of Cu2o Crystals by Glucose Liquid Phase Reduction Morphology Evolution and Size Control

Abstract

Cu 2 O architectures from cube to octahedron in different sizes are successfully synthesized by a facile surfactant-free method. The gluconic acid produced by glucose in the reduction reaction shows directional adsorption on (100) Cu 2 O crystal planes, modifying the growth rate along <100> and <111> directions and forming structures in different shapes. The adsorption efficiency of gluconic acid on the (100) crystal plane is affected by experimental parameters, including the concentration of CuSO 4 ·5H 2 O, NaOH, glucose, the initial temperature, and the stirring time.

Keywords: Cu2O, Crystals growth, Morphology evolution, Glucose liquid phase reduction